Danger! Nessie! (Collector's Rare)

You can reveal this card in your hand; your opponent randomly chooses 1 card from your entire hand, then you discard the chosen card. Then, if the discarded card was not "Danger! Nessie!", Special Summon 1 "Danger! Nessie!" from your hand, and if you do, draw 1 card. If this card is discarded: You can add 1 "Danger!" card from your Deck to your hand, except "Danger! Nessie!". You can only use this effect of "Danger! Nessie!" once per turn.